Welcome to MassLive's live chat and updates for Game 4 of the American League Championship Series between the Boston Red Sox and the Detroit Tigers.

The Red Sox will look to extend their 2-1 series league during the second of three games at Comerica Park. Both teams will be sending out the No. 4 starters in their rotation, with Jake Peavy going for Boston and Doug Fister getting the ball for Detroit.

Follow along to get live updates and to interact through out the game. We'll also be providing in-game analysis from MassLive.com's Evan Drellich and The Republican's Ron Chimelis.